In which state of matter are particles tightly packed together?

Answer 1

Solid !

Answer 2

In both the solid and liquid state, atoms (and molecules) are packed closely together.

In solids the particles are in nearly fixed positions, though vibration is present as a result of thermal motion. In a liquid or gas, particles move extensively as a consequence of the thermal motion. In a solid, the forces between particles are strong enough to hold them in place.

In a liquid, particles are very nearly as close to each other as they are in a solid, but those positions keep changing and the individual particles are free to move around.

In a gas, there is a great deal of space between particles. For a material composed of just simple atoms, say Argon, the solid has particles of only a few angstroms separation. In the liquid form the average distance is no more than a few percent different. In the gas, the distance between atoms is generally hugely different tens, or hundreds or millions of times larger.

This answer is comparing the gas, liquid and solid states of normal matter. Any discussion of exotic states, such as plasma or nuclear matter, is a vastly different topic.
That is the solid state.

Answer 3

The state of matter in which particles are packed tightly together in fixed positions is a solid.

Answer 4

The state of matter that has particles close together and in fixed positions is a solid.

Answer 5

solid state. grade 7 science buddy :P

Answer 6

The solid state.

Answer 7

In a solid.

Answer 8

Solid.

Answer 9

Solid.